621 results about "Antifouling coating" patented technology

Disclosed in the present invention are a fluorosilicone-modified low-surface-energy antifouling coating and a preparation method therefor. The coating comprises the following components in parts by weight: 11-15 parts of butyl acrylate, 3-4 parts of dodecafluoroheptyl methacrylate, 3-4 parts of vinyl-terminated polydimethylsiloxane, 3-4 parts of 2-hydroxy-4-acryloyloxybenzophenone, 30-38 parts of methyl isobutyl ketone, 0.15-0.25 parts of azobisisobutyronitrile, 0.1-0.2 parts of sodium hydroxide, 2-3 parts of modified titanium dioxide nanoparticles, and 0.5-1.5 parts of 3-aminopropyltriethoxysilane. In the present invention, vinylpentamethyldisiloxane reacts with decamethylcyclopentasiloxane to prepare vinyl-terminated polydimethylsiloxane; a titanium dioxide precursor is mixed with polydopamine nanoparticles for modification to prepare modified titanium dioxide nanoparticles; and then the components above are mixed to prepare the fluorosilicone-modified low-surface-energy antifouling coating. The coating has low surface energy and good adhesion and ultraviolet resistance.

The invention discloses a construction method and application of an electrochemical luminescence (ECL) antifouling sensor based on zwitter-ion hydrogel, and belongs to the technical fields of photoelectric sensing analysis, interface antifouling and environmental science. According to the invention, the hydrogel based on sulfobetaine methacrylate zwitterions and bovine serum albumin is used as the antifouling coating, so that the adsorption of biological proteins and bacteria is effectively hindered, and the service life of the sensor is prolonged. Meanwhile, the interior label Au (at) luminol is packaged in the antifouling hydrogel, so that the integration of interface antifouling and ratio detection is realized, the detection accuracy is improved, and the construction process of the ECL sensor is simplified. The constructed ECL anti-pollution sensor has high sensitivity to chloramphenicol detection, the detection limit is 0.39 pM, and the ECL anti-pollution sensor is suitable for trace detection of antibiotics in seawater.

The invention discloses a water-based multi-layer degradable self-polishing ship antifouling coating system and a preparation method thereof, and belongs to the field of marine anticorrosion and antifouling materials. The system is composed of a zinc-rich primer, a modified epoxy intermediate paint and a functionalized finish paint. The finish paint takes polyhydroxyalkanoate as a matrix, and integrates a self-stratification modifier capable of forming a silicon-rich top layer during curing and a latent dual-curing system capable of realizing normal-temperature curing through a synergistic effect. According to the present invention, the mixing mechanism of dynamic self-polishing and static fouling release is adopted, and the innovative curing technology is combined, such that the long working life, the excellent mechanical property and the long-acting antifouling ability are achieved. The drawing adhesive force of the system is not lower than 7.9 MPa, and the environment-friendly requirements that the content of volatile organic compounds is smaller than or equal to 50 g / L, and the content of free diisocyanate monomers is smaller than or equal to 0.1 wt% are met.

This invention belongs to the field of marine antifouling, and specifically relates to a transparent, self-lubricating organosilicon hybrid antifouling coating with a negatively charged surface and its preparation method. The antifouling coating is obtained by a sol-gel reaction of modified nanocellulose, hydroxy acid, and functional fluorine / siloxane monomers; the mass ratio of the hydroxy acid to the modified nanocellulose is 10–100:1; the mass ratio of the functional fluorine / siloxane monomer to the modified nanocellulose is 10–300:1. This invention, based on a multi-element green antifouling strategy, constructs a material surface with negative charge, self-lubrication, and low surface energy. The prepared antifouling coating exhibits excellent transparency, mechanical properties, and static antifouling performance. This antifouling coating is environmentally friendly and has broad application prospects in the field of marine antifouling.

The invention discloses a Schiff base modified silane / polyurethane antifouling coating as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, carrying out dehydration reaction on an aldehyde substance and amino silane, and hydrolyzing to prepare a Schiff base modified silane monomer; s2, dewatering polyether glycol, uniformly mixing the dewatered polyether glycol with diisocyanate, and carrying out cooling reflux under the conditions of stirring and 60-80 DEG C to obtain a polymer A; s3, uniformly mixing the polymer A, a Schiff base modified silane monomer, a solvent and a dibutyltin dilaurate catalyst, and reacting to obtain a polymer B; and S4, coating a base material with the polymer B, and curing to obtain the coating. The anti-fouling coating has a good anti-fouling effect, the coating can effectively inhibit growth of marine fouling organisms based on Schiff base, the active anti-fouling requirement of the coating can be met, meanwhile, the coating has good base material adhesion and wear resistance, and the service life of the coating is guaranteed.

The invention relates to the technical field of organic silicon coatings, in particular to a preparation method of an organic silicon antifouling coating for slowly releasing a lubricant. The preparation method of the organosilicon antifouling coating of the slow-release lubricant comprises the following steps: carrying out emulsion polymerization on silicon dioxide nanoparticles, acryloyloxy alkyl alkoxy silane, fluorine-containing acrylate and lubricating oil in a redox system to obtain a fluorine-silicon modified silicon dioxide nanoparticle emulsion of which the surface is attached with the lubricating oil; and then mixing with organic silicon resin, a coupling agent, a cross-linking agent and a catalyst, and carrying out cross-linking curing to obtain the organic silicon coating. The lubricating oil is adsorbed on the surfaces of the nano particles under the action of grafted functional groups of the functionalized nano particles, so that the lubricating oil is introduced into the organic silicon coating in the form of emulsion particles, micro-nano lubricating oil droplets are formed, long-acting slow release of the lubricating oil is realized, the amphiphobic property and low surface energy of the coating are improved, and the antifouling capacity of the coating is improved; meanwhile, the mechanical property is improved.

The invention relates to the technical field of marine antifouling materials, in particular to a modified polyurethane marine antifouling coating based on a metal pyridine structure and a preparation method. According to the modified polyurethane marine antifouling paint based on the metal pyridine structure, polyhydric alcohols and diisocyanate monomers with different molecular weights are subjected to condensation polymerization to obtain a polyurethane prepolymer; then reacting a diaminopyridine monomer or a dihydroxypyridine monomer with a metal ion compound to obtain a chain extender with a metal pyridine structure; finally, the marine antifouling paint is prepared through the reaction between the terminal amino or hydroxyl of the metal pyridine structure chain extender and the terminal isocyanate group of the polyurethane prepolymer, the metal pyridine structure is introduced into polyurethane, the mechanical performance of the marine antifouling paint is enhanced, the marine antifouling paint is endowed with the antibacterial effect through metal ion release, and the service life of the marine antifouling paint is prolonged. Adhesion and growth of marine fouling organisms can be effectively inhibited, and an efficient and durable solution is provided for development of a polyurethane marine antifouling coating.

The invention discloses a novel marine antifouling gel coating material. The novel marine antifouling gel coating material comprises an antifouling gel monomer, a hardness modifier, an initiator and water, the antifouling gel monomer is an acrylamide series derivative compound or a polyethylene glycol derivative; the hardness modifier is a high polymer capable of providing a hydrogen bond donor or acceptor; the initiator is an organic initiator capable of initiating free radical polymerization of double bonds. The coating material provided by the invention is covalently bonded with an engineering bottom surface needing antifouling through a siloxane compound. A coating prepared from the marine antifouling hydrogel coating material provided by the invention has an excellent antifouling effect and also has excellent physical properties and adhesion strength, and the stability and durability of the antifouling coating can be ensured. In addition, due to the environmental friendliness of the material, the material has a wider application range, and powerful support is provided for the anti-fouling requirement of engineering in the ocean field.

The invention discloses a modified organic silicon marine antifouling paint and coating based on dynamic crosslinking of boric acid ester, and the modified organic silicon marine antifouling paint based on dynamic crosslinking of boric acid ester comprises the following components in parts by weight: 20-40 parts of a component A; 4-10 parts of a component B; 1-3 parts of a component C; wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, borate modified polysiloxane, an auxiliary agent, a pigment filler and a first solvent, the component B comprises a curing agent and a second solvent, and the component C comprises a catalyst and a third solvent. Hydrolysis of boric acid ester bonds increases the hydrogen-bond interaction between the coating and a base material, and meanwhile, ether groups are introduced to strengthen the hydrogen-bond interaction effect, so that the coating can be firmly adhered to the intermediate paint in a seawater soaking environment.

The invention discloses a polyurethane cleaning-resistant antifouling coating based on an oxime-carbamate bond and a preparation method thereof, wherein the preparation method comprises the following steps: S1. After dehydrating the polyether diol, the polyether diol is mixed evenly with a diisocyanate, heated to 70-80°C, and a polymer A is obtained by reaction; S2. Polymer A, a solvent, a dioxime and a dibutyltin dilaurate catalyst are weighed, mixed evenly, and a polymer B is obtained by reaction; S3. Polymer B is coated on a substrate to form a sample, the prepared sample is placed at room temperature, and then the temperature is raised to 60°C for curing to obtain a coating. The antifouling coating of the present invention has good wear resistance, and the coating can undergo a hydrolysis reaction with seawater based on an oxime-carbamate bond, can meet the demand for the coating to be resistant to cleaning, and can solve the problem of marine organisms adhering to the surface of the hull to cause invasion of alien species.

The invention relates to a coral cellulose / photo-thermal material composite antifouling coating and a gradient curing method thereof, and aims to solve the problems of environmental pollution, short antifouling period, lack of environmental response capability and the like in the traditional ship antifouling technology. Through the composite design of the coral cellulose and the photo-thermal material and in combination with a layered curing process, long-acting antifouling and mechanical property strengthening of the coating in a marine environment are realized.

The utility model provides a sleeve type anti-scour structure of an offshore wind power single pile foundation, the anti-scour structure is sleeved on the outer side of a single pile, the surface of the anti-scour structure is provided with a plurality of rows of turbulent flow bulges which are arranged in a staggered manner, the anti-scour structure is directly sleeved on the outer side of a soil body around the pile, the direction of water flow is adjusted through the design of the turbulent flow bulges, and continuous upward flow is generated. The original flowing mode is changed, so that the scouring effect of water flow on soil around the pile is remarkably reduced, the protection effect is enhanced, and the offshore operation cost and potential cable faults are reduced; the structure and the installation process are simple, transportation of rocks, sand bags and the like is not needed, and the construction cost and the influence on the environment are reduced; a non-invasive method is provided for protecting the single pile, and the integrity and the service life of the single pile are kept; special equipment is not needed for scrap recovery, so that the maintenance cost is reduced; when the cable is used with antifouling paint, marine organisms can be prevented from accumulating on the cable.

The invention discloses a construction method and application of a ratio-dependent electrochemical luminescence (ECL) biosensor based on an antifouling red cell membrane, and belongs to the technical fields of photoelectric analysis, biosensing and interface antifouling. In the invention, the erythrocyte membrane with super-hydrophilicity and low membrane protein content is used as an efficient antifouling interface, and the good biocompatibility of the erythrocyte membrane avoids the influence of a chemical antifouling coating on the biological activity of the ECL sensor. Meanwhile, the electropolymerized polyaniline nanowire is embedded into the antifouling erythrocyte membrane, so that the chemical stability and the conductivity of the antifouling erythrocyte membrane are enhanced, and the application of the antifouling erythrocyte membrane in ECL analysis is expanded. C3N4 is introduced as an interior label for eliminating background signals and external interference, so that the detection precision of the biosensor is improved. On the basis, the constructed ECL antifouling biosensor realizes ultra-sensitive detection of human breast cancer cells MCF-7 in human serum, and the detection limit is as low as 3 cells / mL.

The invention discloses rosin modified zinc acrylate self-polishing resin, an antifouling paint containing the resin and a synthesis method. Firstly, under the action of an initiator, an acrylic prepolymer is synthesized from an acrylic monomer through a polymerization reaction; then, under the action of zinc oxide and benzoic acid, rosin resin is grafted to the side chain of the acrylic prepolymer, and zinc acrylate resin with the side chain containing rosin is obtained; and mixing, dispersing and grinding the rosin modified zinc acrylate resin, an anti-fouling agent, pigment filler, an auxiliary agent and a solvent to obtain the self-polishing anti-fouling paint based on the rosin modified zinc acrylate resin. The prepared rosin modified zinc acrylate self-polishing resin is high in polymerization degree, concentrated in molecular weight distribution and good in plasticity and flexibility, and the self-polishing antifouling paint based on the rosin modified zinc acrylate self-polishing resin comprises a cuprous oxide main antifouling agent and a composite organic antifouling agent and has the stable copper ion seepage rate and the good antifouling effect.

The invention provides a marine antifouling coating based on fluorine-silicon low-surface-energy resin. The marine antifouling coating comprises a fluorine-silicon low-surface-energy resin coating (1), an organic silicon epoxy floating coating (2) and an epoxy base coating (3), a ketoxime-removing curing agent is arranged between the fluorine-silicon low-surface-energy resin coating and the organic silicon epoxy floating coating; wherein the fluorine-silicon low-surface-energy resin coating is an antifouling coating; the epoxy prime coat layer is an epoxy resin polymer; the organic silicon epoxy floating coat adopts an organic silicon modified epoxy coating to form a coating system matched with the epoxy prime coat and the fluorosilicone low-surface-energy resin coating; the organic silicon modified epoxy coating contains a siloxy group and an epoxy group, so that the combination of the organic silicon epoxy floating coat coating, the epoxy prime coat coating and the fluorine-silicon low-surface-energy resin coating is realized; the deketoxime curing agent takes KH550, KH570, methyl diacetylmonoxime silane and ethyl diacetylmonoxime silane as raw materials, and the raw materials react with part of water under a heating condition, so that the multifunctional curing / tackifying agent is formed.

The invention relates to a slow-release antifouling material, a preparation method thereof and a marine antifouling coating. The preparation method of the slow-release antifouling material comprises the following steps: carrying out amination modification on porous silicon oxide to obtain aminated porous silicon oxide; loading a carboxylic acid natural antifouling agent on the aminated porous silicon oxide to obtain an aminated porous silicon oxide antifouling agent; blocking pore channels in the aminated porous silicon oxide-antifouling agent by adopting gelatin to obtain aminated porous silicon oxide-antifouling agent-gelatin, so as to obtain aminated porous silicon oxide-antifouling agent-gelatin; and mixing the aminated porous silicon oxide, antifouling agent and gelatin with a chitosan solution at 25-45 DEG C for at least 0.5 hour, collecting a product, and drying to obtain the slow-release antifouling material. According to the slow-release antifouling material, the release rate of the antifouling agent can be reduced, and the protection effect on marine equipment is improved.

The invention provides a simulated aging test method for an antifouling coating. The simulated aging test method comprises the following steps: S1, constructing a natural aging performance model of the antifouling coating; s2, constructing an accelerated aging model of the antifouling coating and acquiring an acceleration ratio N of natural aging to accelerated aging; s3, based on an accelerated aging model, acquiring an acceleration period Mi corresponding to a critical threshold R (temporary i) of a copper ion exudation rate, wherein the predicted life Lp (temporary i) of the antifouling coating is equal to Mi * N; and S4, based on a natural aging model, obtaining a predicted copper ion exudation rate R < pre-i > corresponding to the predicted life Lp < pre->, judging whether R < pre-i >-R < critical i > / R < critical i > is less than or equal to 10%, if so, outputting a near threshold R < critical i > and the predicted life Lp < pre-i >, and if not, adjusting the critical threshold of the copper ion exudation rate to R < critical i + 1 > and returning to the step S3. According to the method, the performance failure threshold value of the antifouling coating is taken as a boundary condition, the performance of the antifouling coating is rapidly evaluated, the service life of the antifouling coating is quantitatively predicted, the prediction result is subjected to cooperative cross validation through linkage double models, and the reliability is improved.

The invention discloses antifouling paint as well as a preparation method and application thereof, and belongs to the technical field of functional paint. The coating is prepared from a light-cured polyurethane prepolymer, modified silicon dioxide, a slow-release antifouling microcapsule and a low-surface-energy modifier. The preparation method comprises the following steps: synthesizing acrylated rosin dihydric alcohol, preparing a light-cured polyurethane prepolymer, mixing all the components, spraying, and carrying out ultraviolet curing. The obtained coating has super-hydrophobic, self-repairing and intelligent antifouling functions, is stable in performance in extreme environments such as salt mist, acid-base, ultraviolet aging and mechanical wear, and is suitable for marine equipment such as culture netting and ships. The invention solves the technical problems of toxic pollution and short service life of the traditional antifouling paint, and has obvious environmental friendliness and economic benefit.

The invention belongs to the technical field of coatings, and particularly discloses an antifouling coating which is prepared from the following components in parts by weight: 40 to 50 parts of waterborne epoxy emulsion, 10 to 20 parts of polycaprolactone polyol, 10 to 20 parts of fluorosilicone modified acrylate, 8 to 15 parts of modified zinc oxide, 0.2 to 0.6 part of dispersing agent, 0.2 to 0.6 part of defoaming agent, 0.2 to 0.6 part of flatting agent, 2 to 5 parts of coalescing agent and 5 to 15 parts of water. The coating disclosed by the invention has an excellent antifouling effect.

The present invention relates to an antifouling coating composition containing a water-dispersed elastomer resin and a hydrophilic silicone oil having an HLB of 6 or more. The present invention also relates to a method for producing the antifouling coating composition, the method comprising mixing a first liquid containing at least a water-dispersed elastomer resin with a second liquid containing at least a hydrophilic silicone oil having an HLB of 6 or more.

The invention discloses a highly-transparent bio-based polyurethane fluoride-free antifouling coating and a preparation method and application thereof.The highly-transparent bio-based polyurethane fluoride-free antifouling coating is prepared by taking tannic acid (TA) as biological polyol, hexamethylene diisocyanate trimer (HDIT) as a cross-linking agent and monohydroxy polydimethylsiloxane (PDMS-OH) as a low-surface-tension material through thermocuring cross-linking, so that the highly-transparent bio-based polyurethane fluoride-free antifouling coating is prepared. And the tannic acid-based polyurethane fluoride-free antifouling coating is prepared. The coating shows up to 99% of optical transparency, has an ultraviolet shielding effect, and has excellent self-cleaning, anti-doodling and anti-artificial fingerprint pollution capabilities, and water, hexadecane, vegetable oil and pump oil easily slide off from the surface without traces. And even if the coating is repeatedly written and erased for 500 times, the coating still keeps excellent anti-graffiti performance. Due to the excellent adhesive force of the TA, the TA can be applied to various base materials. When the coating is bent and folded, the coating is still kept complete, the coating does not crack or peel off, and the coating has a wide application prospect.

The invention discloses a super wear-resistant antifouling paint and a preparation method thereof. The coating comprises the following main components in parts by weight: 40-60 parts of epoxy resin, 4-6 parts of fluorocarbon resin, 12-18 parts of organosilane modified nano hard wear-resistant filler, 4-8 parts of two-dimensional flaky barrier filler, 2-6 parts of an environment-friendly antifouling agent, 10-15 parts of a polyamide curing agent, 1-3 parts of a dispersing agent and 10-20 parts of an environment-friendly solvent. A preparation method of the coating comprises the following steps: (1) preparing materials; (2) premixing; (3) filler modification; (4) adding a filler; (5) adding an antifouling agent; (6) filtering and packaging. The super-wear-resistant antifouling paint disclosed by the invention is excellent in antifouling property, wear resistance and adhesiveness, and is suitable for protecting marine ships and underwater buildings and structures.

The invention provides a marine antifouling coating as well as a preparation method and application thereof. The marine antifouling paint at least comprises transparent marine antifouling resin, nano filler, a solvent and modified cuprous oxide, the transparent marine antifouling resin is prepared from the following raw materials in parts by mass: 250 to 450 parts of silane A, 3 to 50 parts of silane B, 20 to 50 parts of silane C, 10 to 30 parts of silane D, 1 to 50 parts of resin, 300 to 550 parts of solvent, 50 to 150 parts of bactericide, 250 to 350 parts of silica sol, 1 to 30 parts of silicone oil and 20 to 80 parts of pH regulator, the preparation method has the advantages that specific silane and silica sol are adopted for reaction, reaction conditions are controlled, and the marine antifouling resin with excellent adhesive force and durability is prepared; cuprous oxide is subjected to surface modification, so that the durability of the antifouling effect is ensured; the nano material and the modified cuprous oxide powder are added and compounded for use, so that the hydrophobic property and the antifouling effect of the coating are remarkably improved; by adopting the environment-friendly solvent and auxiliaries, the influence of the coating on the environment is reduced.

The invention discloses a polymer composite material based on artemisinin modification, which is characterized in that the polymer composite material comprises organic silicon polyurethane modified by an artemisinin compound and organic silicon polyurea, and the mass ratio of the organic silicon polyurethane modified by the artemisinin compound to the organic silicon polyurea is (2-1): (1-2). The coating is high in hardness, good in mechanical performance, low in elastic modulus, good in stain removal effect and good in adhesion performance, can be stably attached to a substrate and is not prone to falling off, meanwhile, has an excellent antibacterial effect, is not prone to being hydrolyzed by water in seawater or air in the using process on the premise that all the conditions are met, is good in water resistance and can be widely applied to the field of water treatment. Therefore, the long-term stability of the composite coating is ensured, the comprehensive performance of the coating can be comprehensively improved, and the marine antifouling coating serving as an environment-friendly marine antifouling coating has a good application prospect.

The invention discloses organic silicon modified acrylic resin antifouling paint and a preparation method thereof, and particularly relates to the field of chemical paint. The antifouling paint is prepared from the following components in parts by mass: 8 to 12 parts of adamantane acrylate, 5 to 8 parts of trifluoroethyl acrylate, 2 to 3 parts of 2-hydroxyethyl acrylic phosphate, 0.8 to 1.2 parts of tert-butyl peroxypivalate, 4 to 6 parts of tridecafluorooctyltrimethoxysilane, 1 to 2 parts of isophorone diisocyanate, 3 to 6 parts of fluorosilane modified nano TiO2 and 1 to 2 parts of graphene oxide. 20-30 parts of deionized water, 0.5-1 part of a polyether modified polysiloxane defoaming agent, and 0.3-0.5 part of an ultraviolet light absorber UV-327 can be additionally added. The preparation method comprises the following steps: S1, preparing isocyanate modified fluorine-containing organic silicon; s2, preparing a ternary copolymer prepolymer; s3, preparing a modified resin matrix; s4, preparing a fluorosilane modified nano TiO2 / graphene oxide composite filler dispersion liquid; and S5, mixing the resin matrix and the dispersion liquid, and performing stirring and vacuum desolventizing to obtain a finished product. The coating has the characteristics of super-hydrophobicity, high hardness, strong adhesion, long-acting antifouling property, aging resistance and environmental protection.

The invention provides a polyurethane antifouling paint, a preparation method thereof and a polyurethane antifouling coating, and belongs to the technical field of paints. The polyurethane antifouling paint comprises a cross-linkable part and a non-cross-linked resin part, wherein the cross-linkable part comprises a second prepolymer formed by reaction of polyether polyol, dihydroxyl long-chain quaternary ammonium salt and diisocyanate; the non-crosslinked resin part comprises linear or branched chain polyurethane grafted with a sterilizing agent, and the sterilizing agent comprises 3-iodine-2-propynyl-N-n-butyl carbamate. The polyurethane antifouling coating provided by the invention can provide a relatively long-acting antifouling effect in a fresh water environment, the dihydroxyl long-chain quaternary ammonium salt and the bactericide can inactivate protein in contact with the coating, and meanwhile, the reduced free energy on the surface of the polyurethane antifouling coating promotes desorption of surface fouling.

The present invention provides a composition for forming a high-gloss coating film which exhibits good antifouling performance in spite of a relatively slow dissolution rate of the coating film, and which does not cause a coating film abnormality such as a crack even after being immersed in seawater for a long period of time.　The present invention specifically provides an antifouling coating composition which contains a copolymer A, a rosin ester B, and an antifouling agent C, wherein: the copolymer A is a copolymer of a monomer (a1) and an ethylenically unsaturated monomer (a2) other than the monomer (a1); the monomer (a1) is represented by general formula (1); and the rosin ester B is a reaction product of a polyhydric alcohol (b1) and rosin or a derivative thereof (b2).

The invention relates to the field of marine antifouling paint, and particularly discloses marine antifouling paint and a preparation method thereof. The marine antifouling paint is prepared from, by weight, 40%-60% of matrix resin, 10%-15% of solvent, 6%-15% of antifouling agent, 15%-30% of filler, 5%-10% of curing agent, 0.1%-1.0% of defoaming agent, 0.1%-1.0% of dispersing agent and 0.1%-1.0% of flatting agent, and the matrix resin comprises self-polishing resin and tough resin according to the weight ratio of 7: (1-6). The marine antifouling paint provided by the invention has relatively high flexibility, relatively high adhesion strength with a base material, good mechanical properties and a relatively long-lasting relatively high antifouling effect.

The present invention belongs to the field of marine antifouling, and particularly relates to a hybrid antifouling coating of a silicone polymer / POSS grafted with antibacterial molecules and a preparation method thereof. The antifouling coating is obtained by sol-gel reaction of an antibacterial silicone polymer, polyhydroxy POSS and castor oil, and the mass ratio of the antibacterial silicone polymer, polyhydroxy POSS and castor oil is 1: 0.01-0.1: 0.05-0.5. The antibacterial groups distributed on the surface of the coating prepared by the present invention have the characteristics of chemical antifouling, and retain the physical antifouling properties of the low surface energy of the silicone polymer, which significantly enhances the static antifouling ability of the coating. And the present invention chemically connects the flexible silicone polymer and the rigid POSS molecules at the molecular level, and the prepared coating has high mechanical properties and adhesion. The antifouling coating is eco-friendly, durable, and has broad application prospects in the field of marine antifouling.

The invention provides a composite acrylic acid low-surface-energy antifouling coating, a preparation method and application, and belongs to the technical field of marine antifouling materials, the composite acrylic acid low-surface-energy antifouling coating comprises a three-layer composite structure, the three-layer composite structure comprises a bottom layer, a middle layer and a surface layer from bottom to top, the bottom layer is capsaicin-loaded polymethyl methacrylate, and the middle layer is a polymethyl methacrylate surface layer. The bottom layer is made of capsaicin, the middle layer is made of pressure-sensitive adhesive activated by oxygen plasma, the surface layer is made of dihydroxyl-terminated polydimethylsiloxane, the mass ratio of the bottom layer to the middle layer to the surface layer is (23-25): 1: (23-25), and the mass content of capsaicin in the bottom layer accounts for 5.82-5.75% of the total mass; based on the bonding strength change of the pressure-sensitive adhesive generated by oxygen plasma jet and the capsaicin for effectively inhibiting biological growth, polyacrylic acid is used as a self-polishing reservoir to continuously release an environment-friendly antifouling agent; the pressure-sensitive adhesive adheres to the polydimethylsiloxane layer through the adhesive force change generated by oxygen plasma to achieve the low-surface-energy antifouling effect, synergistic gain is achieved, the composite material intervenes into the biological fouling process from multiple aspects, and the composite material copes with the marine biological fouling process jointly.